4-butoxyphenyl isocyanate

Also known as: 4-n-butoxyphenyl isocyanate, 1-butoxy-4-isocyanatobenzene, p-butoxyphenyl isocyanate, benzene, 1-butoxy-4-isocyanato-

4-butoxyphenyl isocyanate (CAS 28439-86-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H13NO2 and a molecular weight of 191.22600 g/mol. Key properties include a boiling point of 150ºC (3 torr) and a flash point of 113ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 28439-86-3
Jingsj CID: J-36393-9
Molecular Formula: C₁₁H₁₃NO₂
Molecular Weight: 191.22600 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	150ºC (3 torr)
Flash Point	113ºC
Exact Mass	191.09500
PSA	38.66000
LogP	2.83280
Vapor Pressure	0.00533mmHg at 25°C
Refractive Index	1.522

Customs & Trade Information

HS Code	2929109000
Summary	2929109000. other isocyanates. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-butoxyphenyl isocyanate?

The CAS number of 4-butoxyphenyl isocyanate is 28439-86-3.

What are the molecular formula and molecular weight of 4-butoxyphenyl isocyanate?

4-butoxyphenyl isocyanate has molecular formula C11H13NO2 and molecular weight 191.22600 g/mol.

What are the upstream and downstream products of 4-butoxyphenyl isocyanate?

For 4-butoxyphenyl isocyanate, Upstream Products: Bis(trichloromethyl) carbonate, 4-Butoxyaniline, 4-Butoxybenzoic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4-butoxyphenyl isocyanate (CAS 28439-86-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36393-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.